Convert IST to EET India Standard Time ↔ Eastern European Time Free Online Secure
Type a time in IST and read it in EET straight away. The offset is −3:30 h, the arithmetic wraps at midnight, and the answer says which day it lands on.
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Through the day — Convert IST to EET (India Standard Time ↔ Eastern European Time)
| IST | EET |
|---|---|
| 00:00 | 20:30 |
| 03:00 | 23:30 |
| 06:00 | 02:30 |
| 09:00 | 05:30 |
| 12:00 | 08:30 |
| 15:00 | 11:30 |
| 18:00 | 14:30 |
| 21:00 | 17:30 |
Where these units come from
Until the middle of the nineteenth century every town kept its own noon, set by the sun overhead, and nobody minded that the next town was four minutes behind. Railways ended that: a timetable cannot be written for a hundred local noons. Britain put its railways on Greenwich time in 1847, and in 1884 the International Meridian Conference in Washington chose Greenwich as the prime meridian and sketched the twenty-four-hour scheme we still use. Greenwich Mean Time was the world's reference until 1972, when Coordinated Universal Time replaced it: UTC is kept by atomic clocks and tied back to the turning Earth by leap seconds. The abbreviations on this page name standard time — the winter setting — which is why each one is a fixed number of hours rather than something that drifts through the year.
Where you meet them
A time zone becomes real the moment two people in different places have to agree on one moment: a call between offices, a flight that lands before it took off, a market that opens while you are asleep, a deadline written in somebody else's afternoon. Server logs, train and flight schedules and anything stamped with a time are kept in UTC precisely so that the question can always be settled, no matter whose clock was on the wall.
Questions people ask
What about summer time?
The offsets here are standard-time offsets, the ones a zone keeps in winter. Where summer time is observed, the same places move one hour further on for part of the year and take a different name: Central European Time becomes Central European Summer Time, Eastern Standard Time becomes Eastern Daylight Time. The switching dates are not the same in every country, and the two hemispheres change in opposite months, so for a date inside a summer-time period add an hour to whichever side observes it.
Why isn't every difference a whole number of hours?
Because offsets are decided by governments, not by geometry. India is half an hour off the hour, at UTC+05:30; Nepal is three quarters, at UTC+05:45; the Chatham Islands are at UTC+12:45. Any of these can be changed by law, and several countries have moved their offset within living memory.
Is the answer exact?
Where both units are defined in terms of one another by whole numbers, yes — the page says so above the figure, and the only rounding is in how many digits are shown. Where the ratio has no finite decimal, the page shows twelve significant digits and says the relation is approximate rather than pretending otherwise.
Does anything I type leave my device?
No. The arithmetic runs in your browser; nothing is uploaded and there is no server to upload it to. Load the page once and it keeps working with the network switched off.
Mumbai's opening bell, read in Bucharest
The Mumbai stock exchange opens at 09:15. The final of the Indian Premier League is bowled in the evening, at 19:30. The Republic Day parade in Delhi sets out at 10:30. A reader in Bucharest, Athens, Helsinki or Tallinn who wants to know what the local clock shows at those moments has to convert IST to EET, and in the dark months the sum is a plain subtraction: three and a half hours. 09:15 IST becomes 05:45 EET, 19:30 IST becomes 16:00 EET, and 02:00 IST slips back to the evening before, at 22:30 EET. Any Indian time earlier than 03:30 belongs to the previous calendar day in Eastern Europe. India keeps one clock all year, so the figure only moves when Eastern Europe does: from 29 March to 24 October, on summer time, you subtract two and a half hours instead.
The page starts with Indian events followed from the Balkans and the Baltic, then gives the rule, the lookup tables and a short profile of each zone. All of the arithmetic runs on your own device.
The Mumbai stock exchange
Opening and closing
Trading starts at 09:15 IST, which is 05:45 EET in winter and 06:45 EEST in summer. The close at 15:30 IST falls at 12:00 EET or 13:00 EEST. Traders in Athens who follow Indian shares therefore watch the whole session before their own afternoon.
Results after the bell
Company results are often posted around 17:00 IST, which is 13:30 EET. A “convert IST to EET” calculation made with the date in view shows whether the figure arrives before or after lunch in Bucharest.
The Indian Premier League final
Toss and first ball
The league plays in spring, so the final is on summer time in Europe. A toss at 19:00 IST happens at 16:30 EEST, and the first ball at 19:30 IST flies at 17:00 EEST.
The last over
With a match of about three and a half hours, the winning runs come around 23:00 IST, which is 20:30 EEST. For Romanian and Greek fans the whole final fits between the end of work and dinner.
The Republic Day parade
The march down Kartavya Path
The parade begins around 10:30 IST on 26 January, which is 07:00 EET. Viewers in Finland and Estonia watch it with their morning coffee, before the working day starts.
Beating Retreat
The military band ceremony on 29 January starts around 17:00 IST, which is 13:30 EET. A “convert IST to EET” calculation shows at once that it falls at the European lunch hour.
Independence Day speech from the Red Fort
The flag and the address
The prime minister raises the flag and speaks from about 07:30 IST on 15 August. In August Eastern Europe is on summer time, so that is 05:00 EEST. Whoever wants to hear it live gets up before dawn.
Rebroadcasts
Evening repeats at 19:00 IST air at 16:30 EEST. A “convert IST to EET” calculation done beforehand tells you which of the two to wait for.
Diwali night
The lamp ceremony
The family prayer for Lakshmi usually begins at 18:30 IST. In November, after the clocks in Eastern Europe have gone back, that is 15:00 EET. Indian communities in Romania and Greece hold their own gatherings in the early evening.
The fireworks
Fireworks launched at 21:00 IST in Delhi are seen at 17:30 EET. For viewers abroad the streams therefore end well before the local night does.
Holi in March
The morning colours
The throwing of colours starts around 10:00 IST, which is 06:30 EET. Holi falls in March, normally before the East European clocks move, so the winter figure applies.
The evening bonfire
Holika Dahan, lit the evening before, burns at about 20:00 IST, which is 16:30 EET. A “convert IST to EET” calculation for the right date confirms which of the two figures to use.
Flights between Delhi and Eastern Europe
The Bucharest connection
A flight from Delhi that leaves at 03:30 IST and takes nine hours with one change lands at 12:30 IST, which is 09:00 EET. The ticket shows 03:30 and 09:00, as for a trip of five and a half hours.
The Athens connection
A flight that leaves Delhi at 04:00 IST and takes ten hours with a stop in Doha touches down at 14:00 IST, which is 10:30 EET. A “convert IST to EET” calculation gives you the hour at which a relative should be waiting at the arrivals gate.
How to convert IST to EET: subtract, borrow, verify
Subtract
Indian clocks run three and a half hours ahead of Romania, Greece or Finland in winter. Write the Indian time on a 24-hour clock and take away 3:30; minutes and hours move together.
Borrow a day
A negative result means yesterday: add 24 to it. 02:00 IST gives 22:30 EET on the previous day, and 03:15 IST gives 23:45 EET on the previous day.
Verify
03:30 IST is 00:00 EET. 06:00 IST is 02:30 EET. 10:45 IST is 07:15 EET. 14:00 IST is 10:30 EET. 18:15 IST is 14:45 EET. 22:00 IST is 18:30 EET. In summer, 22:00 IST is 19:30 EEST.
Eastern Europe's clocks, from the Black Sea to the Baltic
What EET covers
Romania, Bulgaria, Greece, Cyprus, Finland, Estonia, Latvia, Lithuania, Ukraine and Moldova read UTC+2 in winter. In summer, between the last Sundays of March and October, the same countries read UTC+3 and call it EEST.
Egypt's separate calendar
Egypt sits on EET but starts its summer period on the last Friday of April and ends it on the last Thursday of October. Against India the gap is therefore three and a half hours until 23 April, two and a half from 24 April to 29 October, and three and a half again afterwards.
One country, one clock
UTC+5:30 everywhere
From Kashmir to Kerala the Indian day is set to a single offset and no part of the country changes its clocks in summer. The half-hour shows up in the minutes of every answer: 19:15 IST becomes 15:45 EET.
Close neighbours
Sri Lanka keeps exactly the same hour. Nepal uses UTC+5:45, Pakistan UTC+5 and Bangladesh UTC+6.
Three and a half hours between two diaries
When both sides are at their desks
An Indian office open from 09:00 to 17:00 works, on Romanian time, from 05:30 to 13:30. A Romanian office open from 09:00 to 17:00 works from 12:30 to 20:30 on Indian time. Both teams are present from 12:30 to 17:00 IST, which is 09:00 to 13:30 EET.
The best moment to ring
A call from India at 14:00 IST rings at 10:30 EET, when the Romanian morning is in full swing. One from 19:00 IST rings at 15:30 EET, comfortably before the end of the day.
A direct flight to the north
A flight from Delhi to Helsinki that leaves at 13:00 IST and takes nearly eight hours lands at 21:00 IST, which is 17:30 EET. The ticket reads 13:00 and 17:30, as for a four-and-a-half-hour hop.
One Indian hour on four Mondays
January
On Monday 12 January an event at 20:00 IST takes place at 16:30 EET, so the gap is three and a half hours.
The March crossover
On Monday 23 March the same Indian hour still reads 16:30 EET. On Monday 6 April it reads 17:30 EEST, because Eastern Europe advanced its clocks on 29 March and India did not.
August
On Monday 3 August, 20:00 IST gives 17:30 EEST, a gap of two and a half hours.
The return of winter time
On Monday 2 November, after the 25 October change, 20:00 IST gives 16:30 EET again. Monday 21 December gives the same answer.
The months when the gap shrinks
What changes
Between the last Sunday of March and the last Sunday of October the East European clock is an hour further forward, while India stays where it is. The distance between IST and EET therefore drops to two and a half hours.
The correction
A “convert IST to EET” calculation done with the winter figure comes out an hour too early in that interval. There is a single fix: add an hour to the answer.
Entrance-exam results and students in Romania
The publication hour
Results for medical entrance exams are often posted at 11:00 IST. In June that is 08:30 EEST, so applicants already living in Romania check the website over breakfast.
Counselling sessions
An online counselling call booked for 18:00 IST takes place at 14:30 EET in winter. A “convert IST to EET” calculation done before the call shows families on both sides which time to write in the invitation.
Rocket launches from Sriharikota
Countdown in Europe
A launch window opening at 16:00 IST is at 12:30 EET in winter and 13:30 EEST in summer. Space enthusiasts in Athens and Helsinki follow the countdown during their lunch break.
Evening launches
A launch at 21:30 IST is at 18:00 EET. A “convert IST to EET” calculation shows at once that for Europe it falls in the early evening.
Test cricket in India
The morning session
A Test in India usually begins at 09:30 IST, which is 06:00 EET. Fans in Bucharest listen to the first overs before they leave for work.
Lunch, tea and the close
Lunch at 11:30 IST is at 08:00 EET, tea at 14:10 IST is at 10:40 EET and stumps at 16:30 IST is at 13:00 EET. The whole day is over by early afternoon in Romania.
Support centres in India serving Romanian customers
The shift pattern
A support team in India that works from 08:00 to 16:00 IST covers 04:30 to 12:30 on Romanian clocks. Customers in Bucharest reach a live agent in the morning, not in the evening.
Handover to a local team
Work passed on at 16:00 IST reaches a Romanian colleague at 12:30 EET. A “convert IST to EET” calculation made at each handover shows that the thread fits into the European afternoon.
International Yoga Day and Navratri evenings
Sunrise sessions
The mass practice on 21 June starts around 07:00 IST. Eastern Europe is on summer time then, so it is 04:30 EEST. Viewers in Tallinn and Helsinki watch in the early dawn.
Garba nights
In early October the nine-night dance festival peaks at about 21:00 IST, which is 18:30 EEST. A “convert IST to EET” calculation made beforehand shows that European diaspora groups can join in the early evening.
How the clock changes affect this pair
The 2026 calendar
The gap between IST and EET changes during the year. In 2026: 1 January to 28 March and 25 October to 31 December: EET stands 3 hours 30 minutes behind IST; 29 March to 24 October: EET stands 2 hours 30 minutes behind IST.
What to do about it
During the summer periods the zones are called IST and EEST. The calculator assumes the winter gap of 3 hours 30 minutes; adjust by the difference shown for your date. Whenever you convert IST to EET, check which period the date falls in first.
Every hour in one table
IST to EET
00:00 IST corresponds to 20:30 EET (previous day). 01:00 IST corresponds to 21:30 EET (previous day). 02:00 IST corresponds to 22:30 EET (previous day). 03:00 IST corresponds to 23:30 EET (previous day). 04:00 IST corresponds to 00:30 EET. 05:00 IST corresponds to 01:30 EET. 06:00 IST corresponds to 02:30 EET. 07:00 IST corresponds to 03:30 EET. 08:00 IST corresponds to 04:30 EET. 09:00 IST corresponds to 05:30 EET. 10:00 IST corresponds to 06:30 EET. 11:00 IST corresponds to 07:30 EET. 12:00 IST corresponds to 08:30 EET. 13:00 IST corresponds to 09:30 EET. 14:00 IST corresponds to 10:30 EET. 15:00 IST corresponds to 11:30 EET. 16:00 IST corresponds to 12:30 EET. 17:00 IST corresponds to 13:30 EET. 18:00 IST corresponds to 14:30 EET. 19:00 IST corresponds to 15:30 EET. 20:00 IST corresponds to 16:30 EET. 21:00 IST corresponds to 17:30 EET. 22:00 IST corresponds to 18:30 EET. 23:00 IST corresponds to 19:30 EET.
How to read it
Each row pairs one IST hour with the matching EET hour and says when the date changes. The rows follow the same rule that applies when you convert IST to EET. Unlike most pairs, the minutes change here by thirty: :00 turns into :30, :30 turns into :00 and the hour moves with it. Read these rows as standard-time values and check the period section for dates where the difference changes.
The :30 rows
IST to EET, thirty minutes past
00:30 IST corresponds to 21:00 EET (previous day). 01:30 IST corresponds to 22:00 EET (previous day). 02:30 IST corresponds to 23:00 EET (previous day). 03:30 IST corresponds to 00:00 EET. 04:30 IST corresponds to 01:00 EET. 05:30 IST corresponds to 02:00 EET. 06:30 IST corresponds to 03:00 EET. 07:30 IST corresponds to 04:00 EET. 08:30 IST corresponds to 05:00 EET. 09:30 IST corresponds to 06:00 EET. 10:30 IST corresponds to 07:00 EET. 11:30 IST corresponds to 08:00 EET. 12:30 IST corresponds to 09:00 EET. 13:30 IST corresponds to 10:00 EET. 14:30 IST corresponds to 11:00 EET. 15:30 IST corresponds to 12:00 EET. 16:30 IST corresponds to 13:00 EET. 17:30 IST corresponds to 14:00 EET. 18:30 IST corresponds to 15:00 EET. 19:30 IST corresponds to 16:00 EET. 20:30 IST corresponds to 17:00 EET. 21:30 IST corresponds to 18:00 EET. 22:30 IST corresponds to 19:00 EET. 23:30 IST corresponds to 20:00 EET.
Purpose of the list
These are the readings people forget to check: events at :30. Look up the IST time and read the EET time beside it instead of repeating the calculation. The gap used here is the standard winter one; the period section lists the dates on which it differs.
Readings that are not round
IST to EET, with minutes
01:05 IST corresponds to 21:35 EET (previous day). 03:20 IST corresponds to 23:50 EET (previous day). 05:50 IST corresponds to 02:20 EET. 07:35 IST corresponds to 04:05 EET. 10:10 IST corresponds to 06:40 EET. 13:25 IST corresponds to 09:55 EET. 16:40 IST corresponds to 13:10 EET. 19:55 IST corresponds to 16:25 EET. 22:15 IST corresponds to 18:45 EET. 23:05 IST corresponds to 19:35 EET.
A remark on the minutes
Use these when your time is not on the hour or half hour. The half-hour in the offset moves each minute reading by thirty, which is why this pair needs a second look. The gap used here is the standard winter one; the period section lists the dates on which it differs.
Morning, afternoon or night?
From IST to EET, with the time of day
06:00 IST corresponds to 02:30 EET (night). 08:00 IST corresponds to 04:30 EET (night). 10:00 IST corresponds to 06:30 EET (early morning). 12:00 IST corresponds to 08:30 EET (morning). 14:00 IST corresponds to 10:30 EET (morning). 16:00 IST corresponds to 12:30 EET (around midday). 18:00 IST corresponds to 14:30 EET (afternoon). 20:00 IST corresponds to 16:30 EET (afternoon). 22:00 IST corresponds to 18:30 EET (evening).
Why it matters
A conversion is only half the answer: the other half is whether the result is a sensible hour. After you convert IST to EET, check the bracketed word. Winter-time arithmetic applies to these rows; for the dates in the period section, correct the result accordingly.
Before you convert IST to EET: a short checklist
Preparation
Confirm the zones
If a schedule says IST, make sure it comes from India: Israel and Ireland use those letters too, at other offsets. EET is also used by Egypt, which has its own summer calendar.
Use a 24-hour clock
Write 4:30 p.m. as 16:30 and 12:00 a.m. as 00:00 before you start. For example, 09:15 IST becomes 05:45 EET.
Finishing
The operation
Subtract 3 hours 30 minutes. If the result passes midnight, correct the date: readings before 03:30 fall on the previous date.
A second example
Late in the evening, 22:40 IST becomes 19:10 EET.
Traps to avoid when you convert IST to EET
Adding instead of subtracting
Because EET runs behind IST, the result must be an earlier clock reading. A later one points to an addition.
Losing the date
IST readings before 03:30 fall on the previous date. If the date stays put, the answer is a full day out.
The standard figure in the wrong weeks
On some dates in 2026 the distance between IST and EET differs from the usual one, so read the period list before you apply it.
Confusing the abbreviation
If a schedule says IST, make sure it comes from India: Israel and Ireland use those letters too, at other offsets. Egypt shares EET but changes its clocks on different dates from Europe.
Frequently asked questions
What is the difference between IST and EET?
3 hours 30 minutes, and EET is behind IST. That is the standard figure; on some dates in 2026 it differs, as the period list shows.
How do I convert IST to EET?
Subtract 3 hours 30 minutes from the IST time, then fix the date if the result passes midnight.
How much is 21:45 IST in EET?
18:15 EET in the standard period.
Do the seasons affect this conversion?
Yes, on some dates; the period list above shows which.
Does the page keep what I type?
No. Nothing leaves the page.
Other pairs worth a look
You may also want Convert IST to WET, Convert IST to UTC, Convert GMT to EET, Convert UTC to EET, Convert EET to CET, Convert EST to IST, Convert UTC to WET, Convert CET to EET, Convert CST to EST. To go the other way, use Convert EET to IST.
The short version: subtract 3 hours 30 minutes, check the date, and you can convert IST to EET with confidence. No account is needed.